Single Six Question

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Jun 12, 2024
North Texas
Hello, I am new here and had a question. I have a few Rugers but am just now getting into single actions. I won an old model single six on an auction that was listed as a 22lr made in 1958. The serial number begins in 177, which seems to not be 1958? Also after winning the bid, I took a closer look at the cylinder and I think it might be a magnum cylinder? I wanted a 22lr. Can Ruger still fit a 22lr cylinder? Thanks for the advice!


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Mar 6, 2023
Gorham, Maine
Welcome to the forum, that is indeed a magnum cylinder. I believe yours may be a 1961 model according to Ruger's lookup. Sometimes you can find LR cylinders on Ebay for reasonable money or here in the classifieds.


May 8, 2023
When it comes to a Single Six sold with one cylinder, the .22 Magnum sells for less and is harder to sell. Often Gunbroker sellers will offer a .22 Mag as a ".22 " not specifying whether it's a magnum or long rifle, knowing that many buyers will assume it's a .22 LR. Sneaky underhanded trick.


Ruger Guru
Sep 18, 2002
Lake Lure NC USA
Welcome to the Forum!

As noted above,, that serial number shows the gun was made in 1961.

To be 100% sure of the chambering,, get a .22 magnum round,, and see if it will fit in the cylinder. If it does,, it's a magnum. A .22 LR will also fit,, AND shoot through it. But the cases will often split,, and get stuck a bit in the chambers.

Ruger can fit a new cylinder,, but they will also do a mandatory "safety transfer bar" upgrade. Most of the time,, they do return the OM parts,, but many folks prefer to NOT send them in a gun for any work to assure they get the original parts back.

As noted,, you can easily find a spare cylinder on many places like ebay, or gunbroker or even in our classifieds here. To post an ad here,, you'll need to have at least 10 posts before allowed that privilege.

The very good news is that getting a different cylinder for those guns is pretty easy,, AND you normally never have to worry about "timing." the only thing you need to do is find a cylinder,, that has the Over All Length, (OAL) the same as your current cylinder. Measure your cylinder from the very front of the cylinder pin boss to the very rear of the ratchet. That's your OAL. Look for one that's the same or a few thousands longer. A longer one can be easily honed down (the boss area,) to fit. I always purchase spare cylinders for Rugers anytime I find a good deal. I put them in my spare cylinder box,, and when I find a gun that's supposed to be a convertible,, but missing the spare,, I go to digging in my stuff. I've never had an odd spare NOT time correctly.

And it's much cheaper to get a spare off these places than having Ruger build one.

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